I first heard about Berberine from a member of another group I'm a member of. She wanted to get off Metformin and found this alternative and last time I heard she was doing good with it. I'm thinking of trying it for a while as my glucose has been creeping up but A1c is good. I'll wait for this year's labs next month and go from there. Here is a lot of info on Berberine:

https://www.searchlock.com/search?q=Berberine